<!DOCTYPE html>
<html lang='en'>

<head>
    <meta charset='UTF-8'>
    <meta http-equiv='X-UA-Compatible' content='IE=edge'>
    <meta name='viewport' content='width=device-width, initial-scale=1.0'>
    <title>Document</title>
    <script src='../vue.global.js'></script>
</head>

<body>
    <div id="app">
        <ul id="array-with-index">
            <!-- <li v-for="(item, index) in items"> -->
            <li v-for="(item, index) of items">
                {{ index }} - {{ item.message }}
            </li>
        </ul>
    </div>
    
    <script>
        const app = Vue.createApp({
            data() {
                return {
                    parentMessage: 'Parent',
                    items: [
                        { message: 'Foo' }, 
                        { message: 'Bar' },
                        { message: 'Baz' },
                        { message: 'Boo' },
                    ]
                }
            }
        })
        const vm = app.mount('#app')
    </script>
</body>

</html>